Date: Tue, 14 Jul 2015 19:27:32 +0200 From: accounts-ag <accounts-ag@netlabs.org> To: "Matthew D. Fuller" <fullermd@over-yonder.net> Cc: freebsd-fs@freebsd.org Subject: Re: ZFS volume does not seem to free space for deleted files Message-ID: <55A54684.7060408@netlabs.org> In-Reply-To: <20150714100023.GC96394@over-yonder.net> References: <55A4DB1D.7000404@netlabs.org> <20150714100023.GC96394@over-yonder.net>
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On 14.07.15 12:00, Matthew D. Fuller wrote: > I'm pretty sure you can't just add up those USED's and get a number > suggesting how much space deleting them all will free up. AIUI, the > USED number for a snapshot means how much that one alone is using; > e.g., how much space would be freed by deleting just that one. So any > blocks referenced by 2 or more wouldn't show up in those numbers. A > bunch of files that have been sitting around a long time would be a > good candidate for existing in most (/all) of them, so you won't see > them in per-snapshot USED until you delete all but 1. looks right, I found this later: # zfs list -t all -r tank/jail/www NAME USED AVAIL REFER MOUNTPOINT [...] tank/jail/www@hourly-2015-07-13_04.04.00--2d 257M - 46.1G - tank/jail/www@hourly-2015-07-13_10.04.00--2d 260M - 46.5G - tank/jail/www@hourly-2015-07-13_16.04.00--2d 1.70G - 46.7G - tank/jail/www@hourly-2015-07-13_22.04.00--2d 48.4M - 22.3G - tank/jail/www@daily-2015-07-14_00.00.00--2w 32.4M - 4.61G - tank/jail/www@hourly-2015-07-14_04.04.00--2d 20.0M - 4.60G - tank/jail/www@hourly-2015-07-14_10.04.00--2d 20.4M - 4.61G - tank/jail/www@hourly-2015-07-14_16.04.00--2d 19.8M - 4.57G - so one can clearly see where I deleted the files. Will now delete the snapshots before that point and see if this solves it. regards Adrian
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